Good I introduce myself

Good I introduce myself a kid of Caceres and if you can do a hand I have a Daewoo Lanos 1.5 of gasoline and it is giving me a problem has remained in three cylinders I have changed the spark plug wires and the spark plugs have told me that the coil is very difficult to be and medicate that it can be of a valve but it has compression the cylids I have tried without Someone who can help me

thanks in advance